Xen project Mailing List

Eric,

On Thu, Jan 2, 2014 at 2:45 PM, Eric Houby <ehouby@xxxxxxxxx> wrote:

Michael & Eric,

On Tue, Dec 24, 2013 at 6:42 AM, Michaael Mair-Keimberger <m.mairkeimberger@xxxxxxxxx> wrote:

Hi Eric,

I still couldn't get it to work. However, since the ivrs_ioapic kernel
parameter didn't do anything (i didn't even got any log messages about
it) i've dug further into this parameter.
Sadly i found out it's not included in xen-4.3.1 and since gentoo
doesn't provide git ebuilds for xen i'll gonna wait until next xen
will be released. xen-4.4 should be release on 21.01.14 - Thats not that
far away and i guess i can wait for it :)

If you want to passthrough your graphic card i suggest you to install a older
version of xen. Personally i have my own xen-4.2.1 ebuild which don't
include XSA-36. That one works perfectly well.
If irvs_ioapic won't help with next xen I'll go back too...

Regards,

Michael
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Just wanting to check the basics - have you also make sure you've installed the latest BIOS update for your motherboard? Sometimes these updates contain fixes fror issues such as bad table entries.

Regards,

David

David,

Yes, I have the latest BIOS update, F10a, for my GA-990FXA-UD3 ver1.1. PCI passthrough works fine for USB controllers but when I try to passthrough a secondary VGA card I see crash logs as copied in the attachment. If you, or any others on the list, have ideas on how to work through this issue I would be very interested in hearing them.

Thanks,

Eric

I've been looking through the log file and my first instinct is that you're experiencing a driver issue on dom0, which is causing the issue (basically a driver on dom0 has already claimed the device and doesn't like that you're trying to take it away). To validate that, I'd need some more information; You mention that this is a dual GPU system; are both GPUs ATI/AMD/Radeon? How are you making the second GPU available to be passed through (via xl commands? modprobe options? passed kernel options?)

Regards,

David

Re: [Xen-users] vga passthrogh on mainboards with broken ivrs tables